Maytag MLG33 Manual

Service Procedures

for the

Model MLG33 Dryer

Hot Surface Ignitor Gas

Part No. 450266-2

Whirlpool Corporation

CommercialLaundry

BentonHarbor,MI 49022

1-800-662-3587

“IMPORTANT NOTE TO PURCHASER”

Information must be obtained from your local gas supplier on the

instructionstobefollowediftheusersmellsgas. Theseinstructions

mustbepostedinaprominent location near the dryer.

FOR YOUR SAFETY

Do not store or use gasoline

orotherflammablevapors

andliquidsinthevicinity of

thisoranyotherappliance.

POUR VOTRE SÉCURITÉ

Ne pas entreposer ni utiliser d’essence

nid’autresvapeursou liquides

inflammablesà proximité de cet

appareiloude tout autre appareil.

Wehave tried to make this manual ascomplete as possible and hope you willfind it useful. The manufacturer

reserves the right to make changes from time to time, without notice or obligation, in prices, specifications,

colors, and material, and to change or discontinue models. The illustrations included in this manual may not

depict your particular dryer exactly.

IMPORTANT

For your convenience, log the following information:

DATEOFPURCHASE _____________________________________________________ MODELNO. ____________________

DISTRIBUTOR’S NAME ___________________________________________________________________________________

SERIAL NUMBER(S) ______________________________________________________________________________________

_______________________________________________________________________________________________________

For replacement parts, contact the distributor from which the dryer was purchased or contact:

Whirlpool Corporation

Commercial Laundry

BentonHarbor, MI49022

1-800-662-3587

Retain This Manual in a Safe Place for Future Reference

This product embodies advanced concepts in engineering, design, and safety. If this product is properly

maintained, it will provide many years of safe, efficient, and trouble free operation.

Only qualified technicians should service this equipment.

OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation

manual included with the dryer.

The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.

MLG33

Table of Contents

Part Locations and Removal ................4

LowerFrontPanel Removal ......................................... 4

UpperFrontPanel Removal ......................................... 4

TopCoverRemoval....................................................... 4

MiddlePanelRemoval.................................................. 4

LintBox/BlowerAssemblyRemoval............................. 5

GasValve/Ignition SystemRemoval............................. 5

OvenChamberRemoval ............................................... 6

GasValve/Ignition System Components ...................... 6

OvenHousing Components.......................................... 6

TumblerSupport

WheelAssembly Replacement .................................... 6

TumblerAlignment ....................................................... 7

BeltReplacement ........................................................ 8

Placing the Belt Back on the Motor Sheave................. 8

Electrical Component Locations..........9

Electrical Panel ........................................................... 9

Sail Switch andAxial ProbeAssembly ........................ 9

Exhaust Probe, Exhaust Hi-limit,

andLintDrawerSwitch ................................................ 9

IMPORTANT

You must disconnect and lockout the electric

supply and the gas supply or the steam supply

before any covers or guards are removed from

the machine to allow access for cleaning,

adjusting,installation,ortestingofanyequipment

per OSHA (Occupational Safety and Health

Administration)standards.

Please observe all safety precautions

displayed on the equipment and/or specified in

theinstallationmanualincluded with thedryer.

CAUTION

Dryer(s)should never beleftunattendedwhilein

operation.

“Caution: Label all wires prior to disconnection

whenservicingcontrols. Wiringerrorscancause

improperoperation.”

«Attention: Lor des opérations d’entretien des

commandes étiqueter tous fils avant de les

déconnecter. Toute erreur de câblage peut étre

unesourcede danger et de panne.»

WARNING

Childrenshould notbeallowedto playonornear

thedryer(s). Childrenshouldbesupervisedifnear

dryer(s)inoperation.

Under no circumstances should the dryer door

switch(es), lint door/drawer switch(es), or heat

safetycircuit(s)ever be disabled.

Thedryermustnever beoperatedwithanyofthe

back guards, outer tops, or service panels

removed. Personalinjury or fire could result.

Thedryermustnever beoperatedwithoutthelint

filter/screen in place, even if an external lint

collectionsystemisused.

FOR YOUR SAFETY

Donotdrymopheadsinthedryer. Donotuse

dryerinthepresenceofdrycleaningfumes.

The dryers must not be installed or stored in

an area where it will be exposed to water

and/orweather.

The wiring diagram for the dryer is located in

thefront electrical control box area.

4 MaytagCo. 450266-2

Part Locations and Removal

UPPER FRONT PANEL REMOVAL:

Remove the four screws located just above the top

loading door. Tilt the bottom of the panel out and lift

the panel up and away from the dryer.

LOWER FRONT PANEL REMOVAL:

Remove the lint drawer. Remove the four screws

located just below the loading door. Tilt the top of

thepanel out and lift thepanel up and away fromthe

dryer.

TOP COVER REMOVAL:

Firstremovethe back guard,thefour screws holding

top cover. Next pull top cover toward the rear of the

dryer and lift up.

MIDDLE PANEL REMOVAL:

Remove the four screws along bottom of panel.

Next, remove four screws along top of panel.

Tilt the top of the panel out, disconnect electrical

connectionto computerpanel, liftpanel andunhook

support brackets.

450266-2 MaytagCo. 5

Unplug two connections on the exhaust hi-limit at

theleftofthelintbox. The lint box maynowbepulled

out through the front of the dryer.

Unplug the motor harness.

Remove two screws just above the lint drawer and

pull the lint box down from the front and out slightly.

Unplug the exhaust temperature probe.

LINT BOX/BLOWER ASSEMBLY REMOVAL:

EXHAUST

HI-LIMIT

To remove motorizedimpellor assembly, remove lint

housing cover, lint screen, and the four screws

shown with arrows. Pull the motorized impellor

assembly out through the opening.

GAS VALVE/IGNITION SYSTEM REMOVAL:

Be sure to shut off the gas main and then proceed

to remove electrical connections and screws

indicated. Remove lower front panel. Disconnect

union and screws noted with arrows.

Thegasvalveandburnerorificecannowbecarefully

pulled toward the front of the dryer.

Be sure to pull the assembly straight back so as not

to strike the very fragile carbon ignitor. With the

assembly partly out of the oven, the ignitor and the

two gas valve electrical connections can be

disconnected. At this point the assembly can be

removed from the dryer.

Replace assembly in the reverse order but make

sure the tab at the rear of the assembly engages

into the oven base slot.

Inspect all wires to be sure all lead directly toward

the front of the dryer. Be sure no wires are caught

on the burner tube or ignitor.

6 MaytagCo. 450266-2

TUMBLER SUPPORT

WHEEL ASSEMBLY REPLACEMENT:

The front wheel assemblies can be replaced with

the lower front panel removed. Remove the three

bolts by reaching upward with a socket or box

wrench. The illustration below is provided to show

the location of these wheels as the wheels cannot

easily be seen while standing in front of the dryer.

The left rear wheel assembly can be removed with

just the back guard removed. The rear right wheel

requires removing the back guard, heat duct, and

oven. Be sure to mark the position of rear wheel

brackets prior to removal (refer to page 7).

OVEN CHAMBER REMOVAL:

The oven chamber can be removed after the gas

valve/ignition system has been removed.

Remove the two screws indicated by the arrows.

Pull the oven housing part way out through the front

and disconnect all wire connections. The oven

housing can now be removed.

Replace assembly by leading the housing cone into

the hole in the rear wall. Replace screws and wire

connections.

GAS VALVE/IGNITION SYSTEM COMPONENTS:

BURNERTUBE

IGNITOR

GAS VALVE

OVEN HOUSING COMPONENTS:

HEAT SENSOR

OVENCHAMBER

BURNERHIGH-LIMIT

450266-2 MaytagCo. 7

TUMBLER ALIGNMENT:

Proper alignment is achieved by making the gap

between the tumbler and openings in the front and

rear bulkheads equal on all sides.

The front to bulkhead may be checked for accuracy

by using a thickness gauge. The rear gap is not

accessible. Marking the position of the rear wheel

brackets before removing the brackets will help in

replacing the tumbler back into it’s original position

when the wheel brackets are reinstalled.

Adjust the tumbler position by loosening the three

bolts and forcing the wheel assembly toward the

center of the dryer to raise the tumbler and to move

it away from the side. A large screwdriver can

provide the necessary leverage. Adjustment of the

front of the tumbler is made by equalizing the gap

onthetop,bottom,leftandright bymovingthewheel

assemblies.

EXAMPLES:

Below, both wheel assemblies must be moved to

the right in order to move the tumbler right. The left

wheel assembly must move a little more than the

right in order to lift the tumbler.

Below, both wheel assemblies are adjusted correct

and spacing is even on all sides.

All wheel assemblies are mounted on slots to allow

foralignmentofthetumbler. After oneormorewheel

assemblies are replaced, the tumbler must be

realigned.

8 MaytagCo. 450266-2

BELT REPLACEMENT:

Shut off electrical power to the dryer. Lockout and

tagout supplyvoltages. Follow the steps to remove

front middle panel. Next you will remove either the

front bottom or front upper panel, depending on

pocket you are working on. Remove the belt from

the motor sheave. Next, remove the two screws

fastening the lint coupe to the front panel. Remove

the front panel screws, while holding up the

basket. Tilt the top of the front panel forward. Take

note of position of motor adjustment nut spin

counterclockwise to loosen tension. The old belt

can now be removed. Slide the new belt around

basket and push belt to a position close the motor

sheave.

FIG. 2

FIG. 1

FIG. 3

FIG. 4

PLACING THE BELT

BACK ON THE MOTOR SHEAVE:

Placebelt installation tool(BIT) over belt(Fig. 1) and

rotate in a clockwise direction. While rotating run

BIT under motor sheave (Fig. 2). Continue to spin

BIT, belt will then wrap under motor sheave (Fig. 3).

Remove BIT from dryer (Fig. 4). Next, you want to

rotate basket slowly to ensure it is on the sheave

completely. Tighten the motor adjustment nut to

position previous set.

450266-2 MaytagCo. 9

Electrical Component Locations

ROTATIONAL

SENSOR

DOOR SWITCH

COMPUTER

COVER

SAIL SWITCH AND AXIAL PROBE ASSEMBLY:

Located behind back guard. Access doors are

provided. Backguard does nothave to beremoved.

AXIAL PROBE

SAIL SWITCH

EXHAUST PROBE, EXHAUST HI-LIMIT,

AND LINT DRAWER SWITCH:

Temperature probe and exhaust hi-limit are

accessible without the lint box being removed. The

lint drawer switch can be removed after the lint box

is and the cover has been removed.

EXHAUST

HI-LIMIT

TEMPERATURE

PROBE

LINT DRAWER SWITCH

ELECTRICAL PANEL:

Theelectricalpanelislocatedbehindthefrontmiddle

panel.

Part No. 450266 2 - 06/10/14

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